The more I am learning, the more I am inclined to go with and recommend the Arctic Cat M's. Riding stance and fit and finish is not quite as nice as the SkiDoo's, but the engine just seem to be WAAAAY more reliable. Of course everyone has stories of any sled being a total nightmare as much as people have stories of running anything for thousands of miles without incident.

Seems to me though, that AC continues to dial in their design while SkiDoo changes constantly to stay at the forefront. That's cool, but their R&D department seems to consist of their customers.

What the others have said, with an added comment.
If you go onto snowest.com and check out the ski-doo forum, is seems to be accepted by most that the 2006 Rev models had the least amount of issues.
Some earlier models (04/05) had issues with rings, and the 07 model came stock with clutching issues...

Like I've said 100 times. Buy an older RMK, then you can have a grand ol' time on it and when you crash it into a tree you wouldn't absolutely destroy your sled. You can fix it cheap and buy a new sled when you're more comfortable on your sled.

What the others have said, with an added comment.
If you go onto snowest.com and check out the ski-doo forum, is seems to be accepted by most that the 2006 Rev models had the least amount of issues.
Some earlier models (04/05) had issues with rings, and the 07 model came stock with clutching issues...

The clutch manufacturer switched the specs on brp without telling them, they warrantied all clutches, so it's no longer a problem.... the new REVXP's have bigger issues than that. I know 3 people who didn't ride much lasts season because their new rig was in the shop more than they were out riding.

You get that 670 right yet? You are the only person I have heard have bad luck with one of those. Sick King Cat.

Rebuilt top end on it, didn't crack the bottom end. Some metal possibly
slipped into the bottom end, which would get in the bearings eventually and screw it up. Runs wicked strong right now.
Not sure what I'm going to do with it.

Also, that offer for that 98 Powder Special still stands. My buddy lives in Eagle, so you'd have to go there to pick it up.